High-power laser module

Abstract

The utility model discloses a high-power laser module. The high-power laser module comprises a mounting shell, the mounting shell is provided with a first containing cavity with an opening in the bottom, and a bearing bottom plate is further mounted on the lower portion in the first containing cavity. One side of the top of the bearing bottom plate is connected with a heat dissipation base, and one side of the heat dissipation base is further provided with a light combination mechanism. The bottom of the light combining mechanism is connected with a first connecting base, and a laser nozzle is further installed on the first connecting base. The other side of the top of the bearing bottom plate is further connected with a fixing support, and a driving plate connected with the light combining mechanism is further installed on one side of the fixing support. According to the laser engraving machine, the power of the laser module is increased, thicker or more difficult-to-process materials can be processed, the engraving speed of the laser engraving machine can be greatly improved, meanwhile, the air pipe access port is integrated, the laser processing process can be optimized, the processing quality is improved, and the laser engraving machine is reasonable in overall design, compact in structure, convenient to use and high in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of laser engraving, in particular to a high-power laser module. Background Art

[0002] With the continuous development of science and technology, the development and application of laser in the field of engraving has been promoted. Compared with traditional engraving modules that use traditional engraving tools, laser engraving modules based on lasers have effectively improved engraving efficiency.

[0003] Laser engraving and cutting technology first requires a laser that can generate high-power density lasers. The generated laser beam is transmitted and focused through a series of optical elements (such as reflectors and focusing lenses). The focused laser beam forms a very small spot with extremely high power density. When the high-power density laser beam is irradiated on the surface of the material, the material absorbs the laser energy. This absorption causes the surface of the material to heat up rapidly, usually reaching a temperature of thousands of degrees within a few milliseconds. The increase in temperature on the surface of the material causes the material to melt, vaporize (evaporate) or burn (oxidize). As the laser beam moves across the surface of the material, the material is continuously melted, vaporized or burned, forming a narrow and precise cutting seam. The movement of the laser beam is controlled by a numerical control system (CNC), which can accurately cut complex shapes and patterns according to the preset cutting path.

[0004] However, low-power laser heads may not provide sufficient energy density, resulting in ineffective cutting of certain materials or slower cutting speeds. Due to power limitations, low-power laser heads may not achieve the same cutting quality as high-power laser heads when cutting thicker materials, including edge smoothness and perpendicularity. The heat generated during laser cutting can cause a heat-affected zone (HAZ) in the material, leading to deformation or property changes, especially when cutting thick materials. Utility Model Content

[0005] The purpose of this utility model is to provide a high-power laser module. This utility model increases the power of the laser module, can process thicker or more difficult-to-process materials, and can greatly improve the engraving speed of the laser engraving machine. At the same time, it integrates an air pipe access port, can optimize the laser processing process, and improve the processing quality. The utility model has a reasonable overall design, a compact structure, is easy to use, and has strong versatility.

[0006] In order to achieve the above objectives, the following technical solutions are adopted:

[0007] A high-power laser module includes a mounting shell; the mounting shell is provided with a first cavity with an opening at the bottom, and a supporting base plate is also installed in the lower part of the first cavity; a heat sink is connected to one side of the top of the supporting base plate, and a light combining mechanism is also installed on one side of the heat sink; the bottom of the light combining mechanism is connected to a first connecting seat, and a laser nozzle is also installed on the first connecting seat; a fixed bracket is also connected to the other side of the top of the supporting base plate, and a drive plate connected to the light combining mechanism is also installed on one side of the fixed bracket; a cooling fan is also arranged on the top of the cooling seat, and ventilation holes are also provided on the top of the mounting shell corresponding to the cooling fan.

[0008] Furthermore, a first limiting plate extends outward from one end of one side of the heat sink, and a second limiting plate extends outward from one end of the other side of the fixing bracket away from the first limiting plate; the light combining mechanism is located between the first limiting plate and the second limiting plate.

[0009] Furthermore, the light-combining mechanism includes a light-combining shell and a light-combining component installed in the light-combining shell; a light-emitting hole is provided at the bottom of the light-combining shell, and the light beam emitted by the light-combining component is emitted outward through the light-emitting hole; the first connecting seat is installed at the light-emitting hole, and a first through hole is provided at the top of the first connecting seat corresponding to the light-emitting hole and extending to the bottom; the laser nozzle is installed at the bottom of the first connecting seat through the first through hole.

[0010] Furthermore, one side of the fixed bracket is also connected to a second connecting seat arranged on the first connecting seat, and an air flow channel with openings at both the top and the bottom is opened in the second connecting seat; an air pump connector for an external air pump is also installed at the top opening of the air flow channel, and a avoidance through hole is opened at the top of the mounting shell corresponding to the air pump connector; an air inlet is also opened at the top of the first connecting seat corresponding to the bottom opening of the air flow channel, and an outlet air flow channel connecting the air inlet with the first through hole is also opened in the first connecting seat.

[0011] Furthermore, the high-power laser module also includes a focusing assembly; the focusing assembly includes a fixed block, a slider, and a stop knob; the fixed block is installed on the lower part of the inner wall of one side of the first cavity, and the bottom of the fixed block is flush with the bottom of the mounting shell; a sliding groove is provided on one side of the fixed block, and the slider is slidably arranged in the sliding groove; a sliding hole is provided on the outer wall of the mounting shell corresponding to the slider; a connecting block is also connected to one side of the slider, and the connecting block is slidably arranged in the sliding hole; a fixing hole is provided on one side of the connecting block, and the stop knob is installed on the fixing hole.

[0012] Furthermore, a laser indicator light, a power indicator light, and a PWM line access port connected to the driver board are also installed on the top of the installation shell; a toggle switch connected to the driver board is also installed on one side of the installation shell.

[0013] Furthermore, a quartz filter is installed at the lower part of one side of the installation shell near the laser nozzle.

[0014] Furthermore, the light-combining component includes a light-combining reflector; four first COS chips are arranged in sequence along the length direction on one side of the light-combining shell, and four second COS chips are arranged in sequence along the length direction on the other side of the light-combining shell, and the four first COS chips and the four second COS chips are staggered with each other; a first collimating lens and a first reflector are distributed in sequence on the light-emitting optical path of each of the first COS chips, and the four first reflectors are used to reflect the light beam emitted by the first COS chip and then emit it outward after combining the light; the light-combining reflector is arranged on the light path reflected outward by the first reflector, and ... in sequence on the light path reflected outward by the first reflector, and the light-combining reflector is arranged in sequence on the light path reflected outward by the first reflector, and the light-combining reflector is arranged in sequence on the light path reflected outward by the first reflector, and the light-combining reflector is arranged in sequence A half-wave plate and a polarizing plate are arranged in sequence on the optical path reflected by the light reflector; the polarizing plate is used to reflect the light beam passing through the half-wave plate outward, and a focusing mirror is also arranged on the optical path where the polarizing plate reflects the light outward; a second collimating lens and a second reflecting mirror are distributed in sequence on the light output path of each second COS chip; the four second reflecting mirrors are used to reflect and combine the light beam emitted by the second COS chip and then emit it in the direction of the polarizing plate; the light beam reflected by the second reflecting mirror passes through the polarizing plate and is combined with the light beam reflected by the polarizing plate and emitted to the focusing mirror; the focusing mirror is used to focus the light beam and then emit it in the direction of the light output hole.

[0015] By adopting the above solution, the beneficial effects of the utility model are:

[0016] The utility model increases the power of the laser module, can process thicker or more difficult to process materials, and can greatly improve the engraving speed of the laser engraving machine. At the same time, the integrated air pipe access port can optimize the laser processing process and improve the processing quality. The overall design is reasonable, the structure is compact, easy to use, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 for Figure 1 A structural diagram that eliminates the need for installing a housing;

[0019] Figure 3 for Figure 2 Exploded diagram;

[0020] Figure 4 This is a structural diagram of the first connecting seat of the utility model;

[0021] Figure 5 This is a schematic structural diagram of the focusing assembly of the present utility model;

[0022] Figure 6This is a schematic structural diagram of the light combining component of the present utility model;

[0023] The accompanying drawings illustrate:

[0024] 1. Mounting shell; 2. Light combining mechanism; 3. First connecting seat; 4. Laser nozzle; 5. Fixing bracket; 6. Drive board; 7. Cooling fan; 8. Focusing assembly; 11. Carrying base; 12. Heat sink; 13. Ventilation hole; 14. Laser indicator light; 15. Power indicator light; 16. PWM line access port; 17. Toggle switch; 18. Quartz filter; 51. Second limit plate; 52. Second connecting seat; 53. Air pump connector; 54. Air inlet; 55. Outlet flow channel; 81, fixed block; 82, slider; 83, stop knob; 84, connecting block; 121, first limit plate; 201, light-combining housing; 202, light-combining reflector; 203, first COS chip; 204, second COS chip; 205, first collimating lens; 206, first reflector; 207, half-wave plate; 208, polarizer; 209, focusing lens; 210, second collimating lens; 211, second reflector; 212, first through hole. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figures 1 to 6 As shown, the utility model provides a high-power laser module, which in one embodiment includes a mounting shell 1; the mounting shell 1 is provided with a first cavity with an opening at the bottom, and a supporting base plate 11 is also installed at the lower part of the first cavity; a heat sink 12 is connected to one side of the top of the supporting base plate 11, and a light combining mechanism 2 is also installed on one side of the heat sink 12; a first connecting seat 3 is connected to the bottom of the light combining mechanism 2, and a laser nozzle 4 is also installed on the first connecting seat 3; a fixing bracket 5 is also connected to the other side of the top of the supporting base plate 11, and a driving plate 6 connected to the light combining mechanism 2 is also installed on one side of the fixing bracket 5; a cooling fan 7 is also arranged on the top of the cooling seat 12, and a ventilation hole 13 is also provided at the top of the mounting shell 1 corresponding to the cooling fan 7.

[0027] During operation, after the driver board 6 is powered on, it will continuously monitor the real-time status of the signal end. When the signal from the signal end is captured, the driver board 6 will adjust the appropriate voltage to supply the light-combining mechanism 2. The light-combining mechanism 2 combines and shapes the laser beam and emits it outward from the laser nozzle 4. At the same time, since the light-combining mechanism 2 is installed on one side of the heat sink 12, that is, it is in contact with the heat sink 12, the heat generated by the light-combining mechanism 2 is conducted to the heat sink 12, and then conducted by the heat sink 12 to the mounting shell 1 (the other side of the heat sink 12 is provided with heat sink fins, and is in contact with the mounting shell 1, and the mounting shell 1 is made of metal aluminum), thereby dissipating it. A cooling fan 7 is also installed on the top of the heat sink 12 (the cooling fan 7 adopts a branch boost fan), which can blow forcefully from top to bottom to ensure that the heat generated by the light-combining component is quickly taken away and released to the external environment, thereby keeping the equipment running at a suitable temperature and improving its service life.

[0028] In one embodiment, a first limiting plate 121 is further extended outward from one end of one side of the heat sink 12, and a second limiting plate 51 is further extended outward from the other end of the fixing bracket 5 away from the first limiting plate 121; the light combining mechanism 2 is located between the first limiting plate 121 and the second limiting plate 51. The light combining mechanism 2 is installed between the first limiting plate 121 and the second limiting plate 51 to ensure the stability of its installation. At the same time, the light combining mechanism 2 includes a light combining shell 201 and a light combining component installed in the light combining shell 201; a light emitting hole is provided at the bottom of the light combining shell 201, and a light beam emitted by the light combining component is emitted outward through the light emitting hole; the first connecting seat 3 is installed at the light emitting hole, and a first through hole 212 is provided at the top of the first connecting seat 3 corresponding to the light emitting hole and extending to the bottom; the laser nozzle 4 is installed at the bottom of the first connecting seat 3 through the first through hole 212.

[0029] In this embodiment, the light combining component includes a light combining reflector 202; four first COS chips 203 are arranged in sequence along the length direction on one side of the light combining shell 201, and four second COS chips 204 are arranged in sequence along the length direction on the other side of the light combining shell 201, and the four first COS chips 203 and the four second COS chips 204 are staggered with each other; a first collimating lens 205 and a first reflector 206 are distributed in sequence on the light output path of each of the first COS chips 203, and the four first reflectors 206 are used to reflect the light beams emitted by the first COS chip 203 and then emit them outward; the light combining reflector 202 is arranged on the light path reflected outward by the first reflector 206, and the light combining reflector 20 A half-wave plate 207 and a polarizer 208 are sequentially arranged on the light path of the reflection; the polarizer 208 is used to reflect the light beam passing through the half-wave plate 207 outward, and a focusing mirror 209 is also arranged on the light path where the polarizer 208 reflects the light outward; a second collimating lens 210 and a second reflecting mirror 211 are sequentially distributed on the light output path of each second COS chip 204; the four second reflecting mirrors 211 are used to reflect and combine the light beams emitted by the second COS chip 204 and then emit them in the direction of the polarizer 208; the light beam reflected by the second reflecting mirror 211 passes through the polarizer 208, is combined with the light beam reflected by the polarizer 208, and is emitted to the focusing mirror 209; the focusing mirror 209 is used to focus the light beam and then emit it in the direction of the light output hole.

[0030] like Figure 6 As shown, in this embodiment, the light combining component includes 8 COS chips (using 5W lamp beads), which release concentrated blue light. After a series of lens light combining and shaping, these blue lights are converged into a beam of high-efficiency, high-collimation laser. The specific light output circuit is:

[0031] The second COS chip 204 → FAC (bonded in front of the chip to compress the fast-axis light spot) → SAC (collimating lens, compressing the slow-axis light spot, and completing light spot shaping) → the four light spots generated by the four second COS chips 204 pass through the second reflector 211 → pass through the PBS (polarizer 208) to the focusing mirror 209 to output light; and the four light spots generated by the four first COS chips 203 pass through the first reflector 206 and the light-combining reflector 202 → pass through the half-wave plate 207 (P state to S state) → to the PBS for reflection, and the eight light spots overlap and become four light spots that are incident on the focusing mirror 209 to output light; in this application, it can be achieved that eight-way output light shares one shaping lens group, while the size of the light beam spot remains unchanged, the power of the light beam is doubled (compared to the 20W laser module), and the beam quality is the same, the engraving and cutting effects are good, the design is sophisticated, and the application prospects are high.

[0032] In one embodiment, a second connecting seat 52 disposed on the first connecting seat 3 is connected to one side of the fixing bracket 5, and an air flow channel with openings at both the top and bottom is defined within the second connecting seat 52. An air pump connector 53 for connecting an external air pump is also installed at the top opening of the air flow channel, and a clearance hole is defined at the top of the mounting housing 1 corresponding to the air pump connector 53. An air inlet 54 is also defined at the top of the first connecting seat 3 corresponding to the bottom opening of the air flow channel, and an outlet channel 55 is defined within the first connecting seat 3, connecting the air inlet 54 to the first through hole 212. The air pump connector 53 can be connected to an external air pump, and the air flow generated by the air pump passes through the air flow channel, the air inlet 54, the outlet channel 55, the first through hole 212, and the laser nozzle 4 in sequence before being blown outward. This outward air flow not only helps cool the engraving area, but also blows away debris and heat-affected zones generated during the engraving process, thereby improving the clarity of the engraving and the cleanliness of the edges.

[0033] In one embodiment, the high-power laser module also includes a focusing assembly 8; the focusing assembly 8 includes a fixed block 81, a slider 82, and a stop knob 83; the fixed block 81 is installed on the lower part of the inner wall of one side of the first cavity, and the bottom of the fixed block 81 is flush with the bottom of the mounting shell 1; a sliding groove is provided on one side of the fixed block 81, and the slider 82 is slidably arranged in the sliding groove; a sliding hole is provided on the outer wall of the mounting shell 1 corresponding to the slider 82; a connecting block 84 is also connected to one side of the slider 82, and the connecting block 84 is slidably arranged in the sliding hole; a fixing hole is provided on one side of the connecting block 84, and the stop knob 83 is installed on the fixing hole. When focusing is required, that is, adjusting the distance between the laser module and the product (the laser module is installed on the Z-axis of the laser engraving machine and can slide up and down as a whole), you can first loosen the stop knob 83, and then manually push the stop knob 83 to drive the slider 82 to slide up and down through the connecting block 84, so that the slider 82 extends a distance outward from the mounting shell 1, and then slide the entire laser module down until the bottom of the slider 82 touches the product to determine the distance between the bottom of the laser module and the product (that is, the height of the bottom of the laser module). After adjusting the appropriate height, lock the stop knob 83. It is simple and convenient.

[0034] In one embodiment, the top of the mounting housing 1 is also equipped with a laser indicator light 14, a power indicator light 15, and a PWM line access port 16, all connected to the driver board 6. A toggle switch 17, also connected to the driver board 6, is also mounted on one side of the mounting housing 1. The laser indicator light 14 and the power indicator light 15 provide external indications, and the PWM line access port 16 connects to a control device to control the laser output power, turn the laser on / off, and so on. The toggle switch 17 is a 40W / 20W power switch that adjusts the laser power. Furthermore, a quartz filter 18 is mounted on the lower side of the mounting housing 1, near the laser nozzle 4, to block light.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-power laser module, characterized in that: It includes an installation shell; the installation shell is provided with a first cavity with an opening at the bottom, and a supporting base plate is also installed in the lower part of the first cavity; a heat sink is connected to one side of the top of the supporting base plate, and a light combining mechanism is also installed on one side of the heat sink; the bottom of the light combining mechanism is connected to a first connecting seat, and a laser nozzle is also installed on the first connecting seat; a fixed bracket is also connected to the other side of the top of the supporting base plate, and a drive plate connected to the light combining mechanism is also installed on one side of the fixed bracket; a cooling fan is also arranged on the top of the cooling seat, and ventilation holes are also provided on the top of the installation shell corresponding to the cooling fan.

2. The high-power laser module according to claim 1, characterized in that: A first limiting plate is further extended outward from one end of one side of the heat sink, and a second limiting plate is further extended outward from one end of the other side of the fixing bracket away from the first limiting plate; the light combining mechanism is located between the first limiting plate and the second limiting plate.

3. The high-power laser module according to claim 2, characterized in that: The light-combining mechanism includes a light-combining shell and a light-combining component installed in the light-combining shell; a light-emitting hole is provided at the bottom of the light-combining shell, and the light beam emitted by the light-combining component is emitted outward through the light-emitting hole; the first connecting seat is installed at the light-emitting hole, and a first through hole is provided at the top of the first connecting seat corresponding to the light-emitting hole and extending to the bottom; the laser nozzle is installed at the bottom of the first connecting seat through the first through hole.

4. The high-power laser module according to claim 3, characterized in that: One side of the fixed bracket is also connected to a second connecting seat arranged on the first connecting seat, and an air flow channel with openings at the top and bottom is opened in the second connecting seat; an air pump connector for an external air pump is also installed at the top opening of the air flow channel, and a avoidance through hole is opened at the top of the mounting shell corresponding to the air pump connector; an air inlet is also opened at the top of the first connecting seat corresponding to the bottom opening of the air flow channel, and an outlet air flow channel connecting the air inlet with the first through hole is also opened in the first connecting seat.

5. The high-power laser module according to claim 1, wherein: The high-power laser module also includes a focusing assembly; the focusing assembly includes a fixed block, a slider, and a stop knob; the fixed block is installed on the lower part of the inner wall of one side of the first cavity, and the bottom of the fixed block is flush with the bottom of the mounting shell; a sliding groove is provided on one side of the fixed block, and the slider is slidably arranged in the sliding groove; a sliding hole is provided on the outer wall of the mounting shell corresponding to the slider; a connecting block is also connected to one side of the slider, and the connecting block is slidably arranged in the sliding hole; a fixing hole is provided on one side of the connecting block, and the stop knob is installed on the fixing hole.

6. The high-power laser module according to claim 1, characterized in that: The top of the installation shell is also equipped with a laser indicator light, a power indicator light, and a PWM line access port connected to the driving board; one side of the installation shell is also equipped with a toggle switch connected to the driving board.

7. The high-power laser module according to claim 1, characterized in that: A quartz filter is also installed on the lower part of one side of the installation shell near the laser nozzle.

8. The high-power laser module according to claim 3, characterized in that: The light combining component includes a light combining reflector; four first COS chips are arranged in sequence along the length direction of one side of the light combining shell, and four second COS chips are arranged in sequence along the length direction of the other side of the light combining shell, and the four first COS chips and the four second COS chips are arranged staggered with each other; a first collimating lens and a first reflector are sequentially distributed on the light output path of each first COS chip, and the four first reflectors are used to reflect the light beam emitted by the first COS chip and then emit it outward after combining the light; the light combining reflector is arranged on the light path reflected outward by the first reflector, and ... A half-wave plate and a polarizing plate are arranged in sequence on the optical path of the mirror reflection; the polarizing plate is used to reflect the light beam passing through the half-wave plate outward, and a focusing mirror is also arranged on the optical path where the polarizing plate reflects the light outward; a second collimating lens and a second reflecting mirror are distributed in sequence on the light output path of each second COS chip; the four second reflecting mirrors are used to reflect and combine the light beam emitted by the second COS chip and then emit it in the direction of the polarizing plate; the light beam reflected by the second reflecting mirror passes through the polarizing plate and is combined with the light beam reflected by the polarizing plate and emitted to the focusing mirror; the focusing mirror is used to focus the light beam and then emit it in the direction of the light output hole.

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